OFFSET
1,1
COMMENTS
Column 4 of A267644.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) +57*a(n-2) -319*a(n-3) -1391*a(n-4) +9145*a(n-5) +18468*a(n-6) -155864*a(n-7) -132459*a(n-8) +1760919*a(n-9) +254909*a(n-10) -13917643*a(n-11) +4638860*a(n-12) +79124590*a(n-13) -54513835*a(n-14) -327439835*a(n-15) +320570891*a(n-16) +985750855*a(n-17) -1225493352*a(n-18) -2130193456*a(n-19) +3242322831*a(n-20) +3203056845*a(n-21) -6029044853*a(n-22) -3134570201*a(n-23) +7833336809*a(n-24) +1655845581*a(n-25) -6967179434*a(n-26) -21114162*a(n-27) +4096193100*a(n-28) -565113380*a(n-29) -1504086120*a(n-30) +349509240*a(n-31) +309916800*a(n-32) -91209600*a(n-33) -27216000*a(n-34) +9072000*a(n-35)
EXAMPLE
Some solutions for n=6
..0..1..1..0....0..1..0..0....0..0..1..0....0..0..1..1....0..0..1..1
..1..1..0..1....1..0..1..1....1..1..0..1....1..0..1..0....1..0..1..1
..0..0..1..0....0..1..0..0....1..0..1..1....0..1..0..0....0..1..0..0
..1..1..0..1....0..0..1..1....0..0..1..0....1..0..1..1....1..0..1..0
..0..0..1..0....1..0..1..1....0..1..0..0....0..1..0..0....1..1..0..1
..0..1..0..0....1..1..0..0....1..0..1..1....1..0..1..1....0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2016
STATUS
approved